Confederacy, Roper Hospital - Charleston, S.C. 1864 cover from Boston to "Benjamin S. Calef, Prisoner of War, Charleston, S.C./Care of Lt. Col. Stettart L. Woodford, Maj. Gen. Foster's Staff, Hilton Head", franked with United States 1861 3¢ rose tied by segmented cork with red "Boston/Oct. 17" double circle postmark, cover with bold censor's "Ex H.H.R." initials of Capt. Hugh Hamilton Rogers, cover with original enclosure, endorsed at left "Prisoner to be in Columbia, S.C." indicating the Prisoner had been moved to Camp Sorghum, due to an outbreak of Yellow Fever in Charleston, also included is second cover, from the prisoner, "Benjamin S. Calef" to his Father in Salem, Mass. and is sent from Prison Camp Sorghum with manuscript censor's "Exd. J.C. Martin, Capt." marking (J.C. Martin, Commander of Guard Force), franked with United States 1861 3¢ rose & Confederate States 1863-64 10¢ blue (replacement) with "Old Point Comfort/Dec. 16" (1864) double circle postmark, cover with original enclosure dated lined "C.S.A. Prison, Columbia, S.C., Nov. 18th, 1864", letter asks for box of provisions and mentions a Special (Prisoner) Exchange, Very Fine. Estimate  $2,000 - 3,000. A wonderful matched Pair of Covers to and from a Civil War Prisoner. . $0 (Image)